yumechi-no-kuni/locales/index.js

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/**
* Languages Loader
*/
const fs = require('fs');
const yaml = require('js-yaml');
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const merge = (...args) => args.reduce((a, c) => ({
...a,
...c,
...Object.entries(a)
.filter(([k]) => c && typeof c[k] === 'object')
.reduce((a, [k, v]) => (a[k] = merge(v, c[k]), a), {})
}), {});
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const languages = [
'de-DE',
'en-US',
'es-ES',
'fr-FR',
'ja-JP',
'ja-KS',
'ko-KR',
'nl-NL',
'pl-PL',
'zh-CN',
];
const primaries = {
'ja': 'JP',
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'zh': 'CN',
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};
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const locales = languages.reduce((a, c) => (a[c] = yaml.safeLoad(fs.readFileSync(`${__dirname}/${c}.yml`, 'utf-8')) || {}, a), {});
module.exports = Object.entries(locales)
.reduce((a, [k ,v]) => (a[k] = (() => {
const [lang] = k.split('-');
switch (k) {
case 'ja-JP': return v;
case 'ja-KS':
case 'en-US': return merge(locales['ja-JP'], v);
default: return merge(
locales['ja-JP'],
locales['en-US'],
locales[`${lang}-${primaries[lang]}`] || {},
v
);
}
})(), a), {});